om651

Hi everyone I have recently purchased 2017 CLS 220d with OM651 engine and 7g gearbox. Lovely car it is, however... once the engine warms up - 3 knocking noises occurs periodically, like 1, 2, 3 - stop, 1, 2, 3, - stop... sound occurs slower than engine revs. here's a yt link to a sound I...

After starting the car in the morning (this problem happens only in the morning) and driving, the car does not exceed 2000-2500 rpm and does not pull. When I'm braking at the moment when the speed is about 20 km/h, the car gives a small shock, after I stop and restart the car, everything returns...

Hello everyone, I've been checking the engine coolant level for a while since it reduced abnormally recently and if it's reduced I add it up to keep the normal level. Then I realized that there were oil leak signs under the air intake area (passenger side of the engine) as well. These are what...

Hi, looking for help maybe anyone could help, have vito 2011 w639 2.1 113cdi om651 , while driving on motorway coolant temperature keeps steady 90-95C degrees as soon i go in to town slow down, temperature drops to 70-80C degrees any help? Recently replaced thermostat ,water pump, diesel water...

Hi Everyone I am after some guidance please. I was having DPF issues and recently got the pressure sensor replaced. DPF cleaned with some sonic bla bla which costs me a lot of monies. Now I have been told because of the clogged DPF the turbo charger is leaking in my car. I can’t afford a new...

Hi, Just a normal person trying to live a normal life. Always finding ways to save a little money and learn how to spend smartly. I have joined this forum because of issues with my car. It is very very difficult to find an honest independent mechanic and main dealers are way too expensive...

Merry Christmas to all of you and happy new year. Guys i have a huge problem with the smoke coming out from oil dipstick it has been 4 years of fixing and results are same. The car is W204 2010 year 2.2 diesel om651 engine with single turbo after all the struggles and bunch of fixing i gave up...

Hey guys, I'm seeking some insights on a peculiar issue with my 2009 w212 equipped with the OM651 diesel engine. During warm engine restarts, particularly after the car has been stationary for around 15 to 50 minutes, I've been noticing a distinct rattling sound. While I'm not certain about the...

Hey, I have a W204 OM651 with the 722.6 gearbox - turns out the filler pipe has snapped (completely sheared off) and oil can leak out when driving. Had the box recently serviced aswell, so thinking I replace the pipe and top up the transmission with oil. Is it easy to replace the pipe? TIA

Hi, I just had my injector seals changed (due to seeing a leak on my drive and my mechanic diagnosing it to be that) and now my car has a drastic loss of power. Before the injector seal change the cars power fine - engine spools up properly and boost wasn't an issue. When driving the car...

Hello, i own a E class W212 2009 250cdi with Om651 engine but since cold weather started i have a injector knocking noise until it warms up. So my question is what injector do i need i mean part number or is there really a need to code it. Injectors that i have have this P/n A6510702887 So my...

Hello, can someone please send photos of xentry Y94 valve/quantity control valve where it says how it works and when it starts to work when engine is off? I know that it should work when fuel is above 20c temp. I have W212 Om651 250 cdi 2009 engine and every day in winter after short drive rail...

Hi Everyone. Just had my Van serviced yesterday and I made a comment that there is a louder than normal hiss from the turbo when driven hard up hill etc. The dealer sent me a pic showing a oily looking connection to the turbo. I complained about this issue 12 months ago and they changed the high...

Hello, i have w212 om651 2009 sedan, but sometimes when its cold the rpm fluctuates by 50/100 up in idle other than that it runs good acceleretes good with kickdown.But after i replaced the quantity control valve on hp fuel pump Engine light has come on dash after reving it to 2k rpm and power...

Hi, i have e250 cdi OM651 engine 2009 I had rough idle on cold with rpm jumping every few seconds by 50/100 rpm no errors or check engine light.Now i replaced the qcv on hp pump today with new one but after starting it it ran fine but after reving to 2k rpm eml came on, after reading codes i...

Hi all, I expect I am opening a can of worms here, with this but I'd like to get some feedback from people with real world experience. My 200,000 mile 2006 E Class Estate, which I love, just isn't big enough. So I am looking into getting a Vito / Viano / V class. I'm not in the money for a...

Hi people new to the forum, let me know if I've posted on the wrong place, I'm 21 and just bought a W212 E250 CDI, I remember I was 10 and my dad bought one out the showroom and I lusted after one since that day. I read before buying about the timing chains, but can't find any answers as to how...

Hello all my friends! Hope this thread finds everyone well! Last Monday, I was driving my C220 CDI COUPE (2011 Reg, C204) on the motorway. The car was all fine until the moment I was trying to overtake a car and hardly depress the gas. As soon as I depressed the gas and rev hit 3000 RPM, there...

2012 om651 c250 Ive changed the coolant thermostat housing cos it was leaking and obviously I lost coolant, my question is when I refill it is there a procedure as I've read that the housing opens up at a temperature. Cos as I've refitted it the coolant level hasnt dropped even with the engine...

What is the pipe with the sleeve over it. When I turn ignition on but without turning over the engine this pipe hisses then stops after about 20 seconds. I have these codes showing and am trying to locate the problems without paying for help as I lost my job from the covid lockdown.